ASTROSAT CZTI

Data Quality Report

Orbit 28637

Creation date: 2024-06-27T19:54:18.579335
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A10_045T07_9000004110_28637cztM0_level2.evt modeM0/AS1A10_045T07_9000004110_28637cztM0_level2_quad_clean.evt
Size (bytes)403,983,36063,267,840
Size385.3 MB 60.3 MB
Events in quadrant A2,329,076408,003
Events in quadrant B2,813,825398,387
Events in quadrant C2,357,237399,704
Events in quadrant D4,421,034385,823

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C0-1-1
D0-1-1

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103171
B0117091
C0103121
D0165651

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4932661.338200%
B49332575.209811%
C49321382.798054%
D493254911.131387%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 5147 4933 4 4 0.08% 0.08%
B 5148 4934 153 153 2.97% 3.10%
C 5147 4933 1 1 0.02% 0.02%
D 5147 4933 375 375 7.29% 7.60%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 174 34152 277.0 592 579 121.2
A 13 254 9313 72.06 592 579 121.2
A 8 192 6599 49.67 592 579 121.2
B 10 245 518193 4594.11 579 564 112.7
B 12 111 13985 119.12 579 564 112.7
B 11 111 12524 106.15 579 564 112.7
C 14 238 99171 734.8 570 573 134.2
C 0 207 14846 106.37 570 573 134.2
C 7 247 10446 73.58 570 573 134.2
D 1 52 1646397 12362.6 552 537 133.1
D 8 195 526012 3947.02 552 537 133.1
D 2 250 62360 464.37 552 537 133.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter